Corrugated-sheet-bending machine



:tially' cylindricalformation to vthesheet'li ody thereofintheiaccompan-yinga drawings-in Patented Sept. 13, 1927.

nu-Ir an s;r:A,Te's j onnsrnn A.- ERICK, or MUNCiE', INDIANA, Asslenon,ro ,Gnas'o'ocx Bnornnns M N AC I G OMPA EM NG N AN LA oaroaaai on D Ncoanuenrnn-sunarv Applicationfiled Maykl,

My invention relates to. improvements in sheet metalbending machines,andhas ,articulari reference to? amaohine for ben mg previously corruated' sheetsof' metal.

One-ofthe objects of my; invention is to provide a machinewhicliwillbendwapreviously corrugated metal sheet ilong tud anlly: with thecorrugations, to; impart intermed-iate of the-ends of:-;the;s.heet,:avsubstituleaving the end portions substantially straight and" lyingparallelwith: one anoth For; the: urpose'of' disclosing my nvention Ihave-illustfated one: embodim nt which 7 Fig. 1 is a side elevationpartly in section, of a machine embodying my invention, and

Fig. 2 is a plan view thereof, partly in section.

In the embodiment illustrated I provide a base or backing member 1 whichis adapted to extend substantially vertical from a support and isprovided with a foot 2 by which it is secured in position on itssupport. The front face of this base 1 is adapted to re ceive andsupport a transversely corrugated bed die 3 which is preferably hollowon its rear face and is provided with inturned lugs 4 by which it may bebolted to the base 1. Extending through the bearing 5 on the front faceof the base 1, which bearing is formed in a suitable box integrallyformed with the base, is a shaft 6 the ends of which project beyond thetop and bottom of the base 1. A U shaped yoke, the two legs 7 of whichtake over the ends of the shaft 6, carries a roller die 8 having itssurface corrugated to co-operate with the corrugations in the bed die 3.This roller is mounted on a shaft 9 journaled in pillow blocks 10slidably mounted in the legs 7 of the yoke and held in their adjustedposition by means of set screws 11. Suitable collars 12 are secured tothe opposite ends of the shafts to prevent lateral displacement of theshaftin the pillow blocks.

The side faces of the base 1 are corrugated and one has secured theretoa clamping plate 13 having its inner face corrugated to coincide withthe corrugations of the side face of the base and this clamping plate 18is held in clamped position by adjusting screws 14.

In operation the yoke and bending roll 8 BEHDINQ' j insomnia; I

1825; serialtNgr- 27,152;

are thrown to one: side as indicated in dotted lines iniFzig. 2; Thepreviously corrugated sheet 1S. .tlien:.inserted in the clamp formedthe-side face, of the base 1 :and the clamp- 'l 'g'im mbeili' 51.3. andif itspositiQn :has been determined; by the gage: member- 15 theClamping plate =13nissetup until the plate is securely: clampedi in'iposition; The roller-1.8 is! then: set byrthe: ad-justijng.--screws 11,up

against the plateVandthe: yoke: then swung u to: TQYQlVQrthe rollerabouti the bed; die 3v,v a

suitable lever/handle 16on the yoke? being provided for] this purpose."As: the. roller revolves aboutvthe bed 1'die 3, rotating on its ownfliXisaat'the same; time, the-corrugated i sheet; is: bent around the;bed; die: until the roller has swung past the center of the bed die andin a position on the opposite side corresponding. to the position shownin dotted lines in Fig. 2. The curvature in the corrugated plate is thuscompleted and while in the machine the straight ends of the plate areinclined past the parallel, or toward one another. When the plate isremoved from the machine the tendency of the plate to spring back to itsoriginal form moves or straightens these sides out so that they liesubstantially parallel.

To accommodate the roll 8 when it is swung into the position in dottedlines, the

front face of the clamping plate 13 is corrugated as at 17 to coincidewith thecorrugations in the bed die 3.

I I claim as my invention:

1. In a machine for bending corrugated 3.

rality of transversely extending corrugations adapted to receive thecorrugations of the sheet to be bent, a clamp for securing the sheet tobe bent against one of the fiat faces of the bed and adapted to hold thesheet against longitudinal movement and a roller having a series ofparallel corrugations formed in its face to coincide with thecorrugations formed in the bed and mounted to roll on the face of saidbed beginning at a oint on one of the side faces and ending 2. In amachine for bending corrugated sheets of metal, the combination With asheet receiving bed substantially U shaped in cross section and of thesame cross sectional dimension from end to end, the legs of the U beingdrawn inwardly at their extremities and forming substantially flatsides, the face of said bed having formed therein a plurality oftransversely extending corrugations adapted to receive the corrugationsof the sheet to be bent, a clamp for securing the sheet to be bentagainst one of the flat faces of the bed and adapted to hold the sheetagainst longitudinal movement, a roller having a series of parallelcorrugations formed in its face to coincide with the corrugations formedin the bed and mounted to roll on the face of said bed beginning at apoint on one of the side faces and ending at a point on the oppositesideface and beyond the bight in the U, andmeans'for unyieldinglyadvancing the roller toward the "bed;

3. In a machine for'ben'ding corrugated sheets of metal, the combinationwith a sheet receiving bed substantially U shaped in cross section andof the same cross sectional dimension from end to end, thelegs of the Ubeing drawn inwardly at their extremities and forming substantially flatsides, the face of said bed having formed therein a plurality oftransversely extending corruga-r tions adapted to receive thecorrugations of the sheet to be bent, a clamp for securing the sheet tobe bent against one of the flat faces ofthe bed and adapted to hold thesheet against longitudinal movement, a yoke pivoted onthe axis of thebight of said U, a

roller mountedin said yoke and having a thousand nine hundred and twentyfive.

CHESTER A. ERICK.

